Which of the following statements regarding area border routers in an OSPF network is true?

The term backbone router has the same definition as the term area border router.
An OSPF network needs at least one area border router to function.
Area border routers connect the backbone area to other areas in an OSPF network.
By definition, an area border router must perform route summarization between areas.

Answer(s): C

Exhibit

The following IS-IS packets have been exchanged between 2 adjacent IS-IS routers. What type of adjacency will be formed?

Answer(s): D

Which of the following correctly lists the 5 OSPF packet types?

Hello, link state update, link state packet, link State acknowledgement, database description.
Link state update, link state refresh, link state acknowledgement, database description, notification.
Hello, link state refresh, link state update, link state acknowledgement, link state authentication.
Hello, link state update, link state request, link state acknowledgement, database description.

Answer(s): D

Which of the following best describes how IS-IS routers exchange updates on an Ethernet interface?

IS-IS routers exchange updates by sending UDP packets to a multicast address.
IS-IS routers exchange updates using IP multicast packets.
IS-IS routers exchange updates using Ethernet multicast packets.
IS-IS routers exchange updates by sending packets to the subnet broadcast address.

Answer(s): C

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